diff options
Diffstat (limited to 'drivers/infiniband/hw/amso1100/c2_alloc.c')
| -rw-r--r-- | drivers/infiniband/hw/amso1100/c2_alloc.c | 142 | 
1 files changed, 0 insertions, 142 deletions
diff --git a/drivers/infiniband/hw/amso1100/c2_alloc.c b/drivers/infiniband/hw/amso1100/c2_alloc.c deleted file mode 100644 index 78d247ec6961..000000000000 --- a/drivers/infiniband/hw/amso1100/c2_alloc.c +++ /dev/null @@ -1,142 +0,0 @@ -/* - * Copyright (c) 2004 Topspin Communications.  All rights reserved. - * Copyright (c) 2005 Open Grid Computing, Inc. All rights reserved. - * - * This software is available to you under a choice of one of two - * licenses.  You may choose to be licensed under the terms of the GNU - * General Public License (GPL) Version 2, available from the file - * COPYING in the main directory of this source tree, or the - * OpenIB.org BSD license below: - * - *     Redistribution and use in source and binary forms, with or - *     without modification, are permitted provided that the following - *     conditions are met: - * - *      - Redistributions of source code must retain the above - *        copyright notice, this list of conditions and the following - *        disclaimer. - * - *      - Redistributions in binary form must reproduce the above - *        copyright notice, this list of conditions and the following - *        disclaimer in the documentation and/or other materials - *        provided with the distribution. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF - * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS - * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN - * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN - * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE - * SOFTWARE. - */ - -#include <linux/errno.h> -#include <linux/bitmap.h> - -#include "c2.h" - -static int c2_alloc_mqsp_chunk(struct c2_dev *c2dev, gfp_t gfp_mask, -			       struct sp_chunk **head) -{ -	int i; -	struct sp_chunk *new_head; -	dma_addr_t dma_addr; - -	new_head = dma_alloc_coherent(&c2dev->pcidev->dev, PAGE_SIZE, -				      &dma_addr, gfp_mask); -	if (new_head == NULL) -		return -ENOMEM; - -	new_head->dma_addr = dma_addr; -	dma_unmap_addr_set(new_head, mapping, new_head->dma_addr); - -	new_head->next = NULL; -	new_head->head = 0; - -	/* build list where each index is the next free slot */ -	for (i = 0; -	     i < (PAGE_SIZE - sizeof(struct sp_chunk) - -		  sizeof(u16)) / sizeof(u16) - 1; -	     i++) { -		new_head->shared_ptr[i] = i + 1; -	} -	/* terminate list */ -	new_head->shared_ptr[i] = 0xFFFF; - -	*head = new_head; -	return 0; -} - -int c2_init_mqsp_pool(struct c2_dev *c2dev, gfp_t gfp_mask, -		      struct sp_chunk **root) -{ -	return c2_alloc_mqsp_chunk(c2dev, gfp_mask, root); -} - -void c2_free_mqsp_pool(struct c2_dev *c2dev, struct sp_chunk *root) -{ -	struct sp_chunk *next; - -	while (root) { -		next = root->next; -		dma_free_coherent(&c2dev->pcidev->dev, PAGE_SIZE, root, -				  dma_unmap_addr(root, mapping)); -		root = next; -	} -} - -__be16 *c2_alloc_mqsp(struct c2_dev *c2dev, struct sp_chunk *head, -		      dma_addr_t *dma_addr, gfp_t gfp_mask) -{ -	u16 mqsp; - -	while (head) { -		mqsp = head->head; -		if (mqsp != 0xFFFF) { -			head->head = head->shared_ptr[mqsp]; -			break; -		} else if (head->next == NULL) { -			if (c2_alloc_mqsp_chunk(c2dev, gfp_mask, &head->next) == -			    0) { -				head = head->next; -				mqsp = head->head; -				head->head = head->shared_ptr[mqsp]; -				break; -			} else -				return NULL; -		} else -			head = head->next; -	} -	if (head) { -		*dma_addr = head->dma_addr + -			    ((unsigned long) &(head->shared_ptr[mqsp]) - -			     (unsigned long) head); -		pr_debug("%s addr %p dma_addr %llx\n", __func__, -			 &(head->shared_ptr[mqsp]), (unsigned long long) *dma_addr); -		return (__force __be16 *) &(head->shared_ptr[mqsp]); -	} -	return NULL; -} - -void c2_free_mqsp(__be16 *mqsp) -{ -	struct sp_chunk *head; -	u16 idx; - -	/* The chunk containing this ptr begins at the page boundary */ -	head = (struct sp_chunk *) ((unsigned long) mqsp & PAGE_MASK); - -	/* Link head to new mqsp */ -	*mqsp = (__force __be16) head->head; - -	/* Compute the shared_ptr index */ -	idx = ((unsigned long) mqsp & ~PAGE_MASK) >> 1; -	idx -= (unsigned long) &(((struct sp_chunk *) 0)->shared_ptr[0]) >> 1; - -	/* Point this index at the head */ -	head->shared_ptr[idx] = head->head; - -	/* Point head at this index */ -	head->head = idx; -}  |